tag:blogger.com,1999:blog-3324046123100137801.post7301412801295637410..comments2023-10-18T02:01:33.980-07:00Comments on My peculiar nature: Setting the chip breaker blade on a Japanese planeJasonhttp://www.blogger.com/profile/06740185043053833321noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-3324046123100137801.post-92223853669360935162015-06-05T08:54:52.491-07:002015-06-05T08:54:52.491-07:00Hi Gabe!
It looks like the original YouTube video...Hi Gabe!<br /><br />It looks like the original YouTube video has disappeared, and there you go....something else has been lost!<br /><br />Knowledge is funny that way isn't it? This tiny piece of it came to me exactly the same way. The original video was horriblely boring, but there was this point in the demonstration where the daiku was setting his kanna for the cut, and the shaving was curling. He kind of looks out at the audience, seeming to be thinking "Surely you guys already know this but......well, then again, maybe you don't ". <br /><br />I too had read all the books/websites/blogs and videos, but that particular moment was the one for me. Until then, I just wasn't ready.Jasonhttps://www.blogger.com/profile/06740185043053833321noreply@blogger.comtag:blogger.com,1999:blog-3324046123100137801.post-56549237508035489382015-06-05T07:43:24.452-07:002015-06-05T07:43:24.452-07:00Another golden nugget. Sometimes I think I don'...Another golden nugget. Sometimes I think I don't run across a piece of knowledge or technique because I wasn't ready for it. Surely, I thought, if I can't even see the chipbreaker edge its close enough. I've seen video of a temple carpenter finish planing structural beams and laying the 20' long flat shavings to the side. But how? I shouted when I finally tapped the chipbreaker down far enough and the shaving suddenly jumped out so gracefully. And more importantly, the reduction in tear-out is tremendous. No more blowing out grain finish planing assembled rail/stile connections. Thanks!Gabe D.https://www.blogger.com/profile/05809883477919665827noreply@blogger.comtag:blogger.com,1999:blog-3324046123100137801.post-66646548812228594932014-10-19T18:07:07.830-07:002014-10-19T18:07:07.830-07:00That's interesting, genetics has been a bit of...That's interesting, genetics has been a bit of a hobby for me over the past two years or so. I have read a few books on the subject and find it very interesting. I also have a daughter working on a PhD at present. I hope everything works well for you with the move and that you like Hawaii (although I am not sure what's not to like).<br /><br />I'm glad you are getting some use out of that high angle kanna, if I had kept it, it would just sit for years. It's better that it gets used. Take care.Anonymoushttps://www.blogger.com/profile/15075440454691100473noreply@blogger.comtag:blogger.com,1999:blog-3324046123100137801.post-54058871189454510052014-10-19T06:23:08.616-07:002014-10-19T06:23:08.616-07:00Hi Dave!
Yes, towards the first half of December ...Hi Dave!<br /><br />Yes, towards the first half of December (holy crap holy crap holy crap!!) we are moving to Hilo, Hawaii! My wife accepted a post-doc position at University of Hawaii, Hilo as a project coordinator for a multi disciplinary study on a whole bunch of different species. Her field is genetics, focusing on evolved organic sensory mechanisms used in navigation. At least that's what I *think* she studies. It's all so over my head, my eyes cross every time I see a string of letters that represent an expressed DNA strand....... Ohhhhh, my head..... It hurts.....<br /><br />The utility of the sub-blade is clear to Japanese kanna users. Heck, a few years ago even the WESTERN plane users started using their chip-breaker again, after that Japanese video went mainstream, showing how the "breaker" caused the shavings to release without tear-out (or just take a super thin shaving. That prevented tear-out, too.)<br /><br />What was funny (for me) was that I thought that I was already there. I thought that I was close enough! I was getting great results with pine and cherry, just not the typical "difficult" woods like the sapwood of cedar, or rowed mahogany. I was trying to achieve better results, but had more or less given up on the tough stuff.<br /><br />I literally cannot see the exposed portion of the main blade anymore, but the shaving tells all. It gives an immediate verification that the blades are set correctly to each other, without having to shred some unruly grain for proof that I DIDN'T get it right, haha! Not that I've eliminated tear-out, mind you....<br /><br />For the REALLY difficult stuff, your higher angle kanna still works better, even though I have yet to fit the sub-blade. Fitting that has now jumped to the head of my "do" list. I just wanted to thank you again. It is a good one!<br /><br />JasonJasonhttps://www.blogger.com/profile/06740185043053833321noreply@blogger.comtag:blogger.com,1999:blog-3324046123100137801.post-87963793608264786222014-10-18T17:00:42.527-07:002014-10-18T17:00:42.527-07:00Jason,
You're moving to Hawaii? Wow! What does...Jason,<br />You're moving to Hawaii? Wow! What does your wife do? Why are you moving?<br /><br />I remember Robert Meadow used to explain to students that the name "chip breaker" was actually a misnomer for Japanese kanna. The sub-blade is actually a better name because it actually pre-stresses the main blade right out at the cutting edge more than it breaks the chip. He explained that when you get chatter with a plane it's because the edge of the cutting blade gets pushed back by the wood being planed and then it springs forward and this repeats over and over again. The sub-blade gets a secondary bevel at the edge so that it is "stronger" right out at the edge than the main blade. It pushes the main blade back essentially pre-stressing it so you do not get that chatter. In order to do this well it needs to be right up tight to the edge of the main blade. I will never forget Robert explaining this. Good luck with the move!Anonymoushttps://www.blogger.com/profile/15075440454691100473noreply@blogger.comtag:blogger.com,1999:blog-3324046123100137801.post-87961347273438044232014-10-18T13:54:21.900-07:002014-10-18T13:54:21.900-07:00Hey Siavosh!
I was wondering if you would catch t...Hey Siavosh!<br /><br />I was wondering if you would catch this one, haha! This is a whole 'nother level of finicky, but it's really quite amazing. <br /><br />I've got no secrets, but but I sure have lots of questions. Knowledge not shared is swiftly forgotten and everything that I do know was first put out there by someone else. I'm just passing it on.<br /><br />I hope that your kanna are treating you well.<br /><br />JasonJasonhttps://www.blogger.com/profile/06740185043053833321noreply@blogger.comtag:blogger.com,1999:blog-3324046123100137801.post-65561832168860116012014-10-18T10:23:40.188-07:002014-10-18T10:23:40.188-07:00This is awesome, thanks for sharing! I've been...This is awesome, thanks for sharing! I've been trying to understand the conditions for the shavings to shoot out in that amazing way. Every once in a while I would accidentally get it, but could never reproduce it consistently. Chris Hall alluded to how to make it happen in an old blog post but I still couldn't figure it out. Will definitely give this a try.Siavoshhttps://www.blogger.com/profile/07197753955117889947noreply@blogger.com